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Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management

To improve the problems of large interface thermal resistance and low heat dissipation efficiency in battery thermal management (BTM), this paper uses methyl silicone oil as the matrix, AIN, copper powder (CP), and carbon fiber (CF) as thermally conductive fillers, and acetone and stearic acid as pa...

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Autores principales: Liu, Ziqiang, Huang, Juhua, Cao, Ming, Jiang, Guiwen, Hu, Jin, Chen, Qiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7663785/
https://www.ncbi.nlm.nih.gov/pubmed/33114472
http://dx.doi.org/10.3390/ma13214763
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author Liu, Ziqiang
Huang, Juhua
Cao, Ming
Jiang, Guiwen
Hu, Jin
Chen, Qiang
author_facet Liu, Ziqiang
Huang, Juhua
Cao, Ming
Jiang, Guiwen
Hu, Jin
Chen, Qiang
author_sort Liu, Ziqiang
collection PubMed
description To improve the problems of large interface thermal resistance and low heat dissipation efficiency in battery thermal management (BTM), this paper uses methyl silicone oil as the matrix, AIN, copper powder (CP), and carbon fiber (CF) as thermally conductive fillers, and acetone and stearic acid as particle surface modification components. A variety of binary thermal silicone greases (TSGs) with different compositions were prepared. Different instruments were used to test the material properties of TSGs, and a better TSG was selected to coat the interface between battery and phase change material (PCM) for battery charging and discharging experiments. Through the analysis of experimental data, it was found that among the TSGs made of three mixed fillers (AIN/CP, AIN/CF, CP/CF), the three TSGs had good thermal stability, and their thermal degradation temperature both exceeded 300 °C. As the ratio of thermally conductive filler was gradually changed from 5:1 to 1:5, the TSG containing CP/CF had higher thermal conductivity and lower volume resistivity, while the TSG containing AIN/CF had the least damage due to interface wear. The acidification treatment of thermally conductive filler can improve the adsorption and compatibility of thermally conductive particles and silicone oil, and reduce the oil separation rate of TSGs. The prepared expanded graphite (EG)/paraffin wax (PW) composite phase change material (CPCM) has a relatively large latent heat of phase change, which can effectively control the temperature of the battery, but coating TSG between the battery and the CPCM can further enhance the heat dissipation effect of the battery.
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spelling pubmed-76637852020-11-14 Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management Liu, Ziqiang Huang, Juhua Cao, Ming Jiang, Guiwen Hu, Jin Chen, Qiang Materials (Basel) Article To improve the problems of large interface thermal resistance and low heat dissipation efficiency in battery thermal management (BTM), this paper uses methyl silicone oil as the matrix, AIN, copper powder (CP), and carbon fiber (CF) as thermally conductive fillers, and acetone and stearic acid as particle surface modification components. A variety of binary thermal silicone greases (TSGs) with different compositions were prepared. Different instruments were used to test the material properties of TSGs, and a better TSG was selected to coat the interface between battery and phase change material (PCM) for battery charging and discharging experiments. Through the analysis of experimental data, it was found that among the TSGs made of three mixed fillers (AIN/CP, AIN/CF, CP/CF), the three TSGs had good thermal stability, and their thermal degradation temperature both exceeded 300 °C. As the ratio of thermally conductive filler was gradually changed from 5:1 to 1:5, the TSG containing CP/CF had higher thermal conductivity and lower volume resistivity, while the TSG containing AIN/CF had the least damage due to interface wear. The acidification treatment of thermally conductive filler can improve the adsorption and compatibility of thermally conductive particles and silicone oil, and reduce the oil separation rate of TSGs. The prepared expanded graphite (EG)/paraffin wax (PW) composite phase change material (CPCM) has a relatively large latent heat of phase change, which can effectively control the temperature of the battery, but coating TSG between the battery and the CPCM can further enhance the heat dissipation effect of the battery. MDPI 2020-10-26 /pmc/articles/PMC7663785/ /pubmed/33114472 http://dx.doi.org/10.3390/ma13214763 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Ziqiang
Huang, Juhua
Cao, Ming
Jiang, Guiwen
Hu, Jin
Chen, Qiang
Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management
title Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management
title_full Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management
title_fullStr Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management
title_full_unstemmed Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management
title_short Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management
title_sort preparation of binary thermal silicone grease and its application in battery thermal management
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7663785/
https://www.ncbi.nlm.nih.gov/pubmed/33114472
http://dx.doi.org/10.3390/ma13214763
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